posted by hannah .
A moon orbits a planet in the xy plane, as shown in the figure. You want to calculate the force on the moon by the planet at each location labeled by a letter (A,B,C,D). At each of these locations, what are (a) the unit vector r, and (b) the unit vector F in the direction of the force?
the picture looks like this
C Planet A
No figure. Cannot copy and paste here.